Edging machine



Dec. 31, 1929.

P. S. LEGGE EDGING MACHINE Fi ld Jan. 14, 1927 4 Sheets-Sheet l fave ior;

Ze S. Leqge, N4 11 Dec. 31, 1929. P, s. LEGGE 1,741,321

' EDGING MACHINE Filed Jan. 14. 1927 4 Sheets-Sheet 2 Invenior:

G Pai e? .Le a

P. S. LEGGE EDGING MACHINE Dec. 31, 1929.

Filed Jan. 14. 1927 4 Sheets-Sheet nveniow':

P656 Gil/e ye, 2; 43

P. S. LEGGE EDGING MACHINE Dec. 31, 1929.

4 Sheets-Sheet 4 Filed Jan. 14. 1927 Inventor: I feievidbe g e, b r v Patented Dec. 31, 1929 UNETED STATES PATENT OFFICE EDGING MACHINE Application filed January 14, 1927.

My invention relates to stone working machines, and particularly but not exclusively to one for edging blocks of stone.

4 The invention will be best understood from the following description when read in the light of the accompanying drawings of a specific embodiment of the invention, while the scope of the invention will be more parti-cularly pointed out in the appended claims. In the drawings Fig. 1 shows a side elevation of the machine;

Figs. 2 and 3 respectively are sections on the lines 22 and 33 of Fig. 1;

Fig. 4 shows a detail;

Fig. 5 is a section on an enlarged scale on the line 5-5 of Fig. 4;

Fig. 6 is a plan of the machine with parts omitted; and

2 Fig. 7 shows a detail of the carriage propelling mechanism.

Referring to the drawings the illustrative embodiment of the invention comprises the vertical columns 1, 3, 5, 7, 9 and 11., on each of which is a sliding sleeve 13, the sleeves being supported by screw threaded rods 15 engaging nuts 17 rigidly carried by said sleeves. The rods 15 are rotatably supported at their upper and lower ends and restrained against no longitudinal movement in suitable manner so that rotation of the rods will be effective to raise and lower the sleeves 13.,

Fer rotating the rods 15 I have shown the upper end of each as carrying a bevel gear 19, these gears being operatively connected with each other by lay shafts 21 having bevel gears 20 meshing with the gears 19 in such manner that when one rod 15 is rotated all the other rods 15 will rotate in the same direction. For driving the rods I have shown a reversible electric motor 23 supported on framing at the top of the columns, the motor having a drive shaft 25 geared to the left hand lay shaft'21 as viewed in Fig. 6, which gear maybe of any suitable sort, as for example a worm drive located in the gear casing indicated at 27.

Referring particularly to Figs. 1, 3 and 6 I have indicated the sleeves 13 on the posts 5 and 7 as connected by I-beams 29, similar I- Serial No. 161,115.

beams 29 connecting the sleeves 13 on the columns 3 and 9, and on the columns 1 and 11. As shown in Figs. 1 and 6 the right hand and intermediate I-beams support bearings 31 for a horizontal rotary shaft 33, while the left hand and intermediate I-beams carry a plate 35 011 which is supported an electric motor 37 for driving the shaft 33, the motor driving a pinion 39 in mesh with a gear 41 on the end of the shaft 33. Herein the shaft 33 is utilized for driving one or more saws 43 which as shown are of the circular type and are mounted directly on the shaft. It will be observed that by rotating the motor 23 in opposite directions the shaft 33 with its saws and driving motor will be raised and lowered.

In the foundation for the machine below the support for the shaft 33 is formed a pit 45 at opposite ends of which are mounted bearings 47 (Fig. 2) supporting a lower shaft 49, the shaft at one end having a gear 51 in mesh with a pinion 53 driven by an electric motor 55 so that the shaft may be rotated. As illustrated the shaft 49 is parallel to the shaft 33, and as hereinafter will more fully appear, is arranged behind it relative to the direction in which the stone is fed. As shown the shaft 49 carries circular saws 57 arranged in the same plane as the saws 43 carried by the shaft 33.

Preferably the saws 43 and 57 are mounted on their respective shafts in such manner that they may be adjusted longitudinally of said shafts. For example, referring to Figs. 2 and 3, they may be mounted between flanges 59 and 61 on the shafts secured together by means of bolts 63, each flange 61 having formed integrally therewith one half 65 of a collar, the other half 67 of which is formed as a separate member secured to the half 65 by bolts 69 so that drawing up on the bolts will clamp the collar to the shaft. The saws 57 and 43, which are shown diagrammatically in Figs. 1, 2, 3 and 6, may be of any suitable construction, as for example those shown in Figs. 4 and 5 which comprise relatively thin disks 71 carrying relatively thick saw teeth 73 on their peripheries.

Referring to Figs. 4 and 5; the stone,

which is indicated at S, may be fed in the direction of the arrow between the shafts 33 and 49 while the saws are rotated in the direction of the arrows so as to cut the saw slot S S. It will be obser ed that as shown the stone is completely severed by the action of the two saws, the upper saw cutting through the upper face of the stone and the lower saw cutting through the lower face of the stone, which arrangement will prevent breaking of the faces of the stone which would otherwise occur if it were attempted to cut all the way througl'i the stone by a single saw.

Preferably during the sawing operation abrasive in the form of chilled shot mixed with water is fed to the saws at the portions thereof where the teeth enter the saw cuts. As shown in Figs. 1 and 3, the upper saws ,are each provided with a guard which encloses the upper portion of the saw a d is supported on angle irons 77, the ends of the latter being supported on angle irons 79 carried by the sleeves 13 on the columns 3 and 5, and on the columns 7 and 9, so that the guards will be raiser and lowered with these saws. The angle irons 77 may be socured to the angle irons 7 9 in any suitable manner to permit securing of the former to the latter in different adjusted positions of the saws longitudinally of the shaft. The abrasive preferably is supplied to the interior of the guard 75 by a hose connection 81 communicating with said interior adjacent that portion of the periphery of the saw which is entering the saw out. As illustrated, (Figs. 3, 4 and adjustably carried by the angle irons 77 is a plate like member 83 secured to the angle irons by bolts 85 passing throughslots 87 formed in the vertical webs of the angle irons. As illustrated, the member 83 is formed of a pair of spaced side plates 89 welded at their marginal portions to a spacing member 91 5) so as to provide an interior chamber 93. As shown the up end of the interior chamber 93 may be sup plied with abrasive, as for example water, or chilled shot and water, by a hose connection 95, while the lower end of the plate may be formed to present a nozzle 97 for discharging the abrasive from said chamber to between the two saws. As shown by 4:, the mem ber 33 is positioned in the portion of the saw cut formed'by the upper saw 43, and forms with the two saws and the uncut portion of the stone below the saw 43 pocket G, the forward side of the member 83 being curved as indicated at 99 approximately to conform to the periphery of the saw 43, while the lower edge 101 of said member is placed adjacent the periphery of the lower saw 57. This construction prevents the upper saw from removing the abrasive for the lower saw from the stone cut and .causes theabrasive to be fed to the lower saw. As the abrasive fed to the upper saw finds its way to the pocket G, in some instances no abrasive need be fed by the hose connection 95, in which case the hose connection 81 constitutes the only means for feeding abrasive to the lower saw. In most instances however, to secure best results, at least water should be supplied by the hose connection 95.

Referring to Figs. 1, 2 and 3 the bottom 103 of the pit 15 is inclined toward one end to cause the abrasive and water to flow upward and to be collected in a sump 105, through which the lower end of a bucket conveyor 107 moves. The speed of the conveyor is such as to cause the shot to be thrown by centrifugal force from the buckets 109 when at the upper end of the conveyor into the funnel mouthed end 111 of a chute 113 discharging into the elevated end of a downwardly inclined trough 115, with which trough communicate the several hose connections 81 and 95.

Herein for feeding the stone relative to the saws are provided one or more carriages 117 (Figs. 1 and 3) which are provided with wheels 119 adapted to run on any pair of a plurality of parallel tracks 121.

For driving the carriages I have shown the same provided with racks 123 (Figs. 1 and 7) carried on the under sides'of the carriages by means of brackets 125 at opposite ends of the carriages, the racks being of such length that when two carriages are joined by means of the coupling device indicated at 127 in Figs. 3 and 7 the ends of the racks of adjacent carriages will abut so that a train of carriages supporting a number of blocks of stone may be fed past the saws.

For driving the carriages I have shown a' shaft 129 extending through a pit 130 formed transversely of the several tracks, this shaft being driven by a motor 131 connected there to by a suitable gearing device positioned at 133. As shown the shaft 129 carries a number of gear wheels 135 respectively placed between the tracks 121 in such position as to mesh with the racks 123 of carriages on the adjacent tracks. If desired suitable removable covers 137 may be provided for the pertions of the pit 130 adjacent those gears 135 which are not in use.

To enable the tracks 121 to bridge the pit 15 below the saws, and to enable the lower saws 57 to be adjusted longitudinally of the shaft 1-9, I have shown the tracks as provided with movable sections 139, the ends of which are adapted to rest in recesses 141 at the sides of the pit in alignment with the main sections of the tracks.

It will be understood that the tracks 121 if desired may at each end communicate with suitable switching devices so that carriages may be shunted to and from loading and unloading stations and continuous trains of cars may be fed to the It will also be understood that the stone may be fed to the saws so as to edge it or to sever large blocks, and that the stone may be supported on one or more parallel carriages, both of which arrangements are indicated in Fig. 1. It is also to be understood that I am not limited to the particular kind of abrasive employed, and that for convenience of nomenclature I have included under the term abrasive liquids such as water.

Although I have described for purposes of illustration one particular embodiment of my invention it will be understood that Within the scope of my invention wide deviations may be made therefrom without departing from the spirit of my invention.

Claims:

1. A stone sawing machine comprising, in combination, a pair of circular saws the axes of which are substantially parallel, means for simultaneously rotating said saws, means for effecting feeding movement between said saws and the stone in such direction and at such angle to the plane including the axes of said saws that the stone is partially severed by one saw and the severing is completed by the other saw, means entering the saw cut formed by one saw for forming a pocket in said saw cut adjacent the uncut portion of the stone and the periphery of the other saw. 2. stone sawing machine comprising, in combination, a pair of circular saws the axes of which are substantially parallel, means for simultaneously rotating said saws, means for effecting feeding movement between said saws and the stone in such direction and at such angle to the plane including the axes of said saws that the stone is partially severed by one saw and the severing is completed by the other saw, and means entering the saw cut formed by one saw for feeding abrasive to the other saw.

3. A stone sawing machine comprising, in combination, a pair of circular saws the axes of which are substantially parallel, means for simultaneously rotating said saws, means for effecting feeding movement between said saws and -the stone in such direction and at such angle to the plane including the axes 'of said saws that the stone is partially severed by one saw and the severing is completed by the other saw, and means entering the saw cut formed by one saw for feeding abrasive to the other saw, said means formed for pre venting the saw forming said saw cut from removing said abrasive from said saw cut.

4. A stone sawing machine comprising, in combination, a pair of circular saws the axes of which are substantially parallel, means for simultaneously rotating said saws, means for effecting feeding movement between said saws and the stone in such direction and at such angle to the plane including the axes of said saws that the stone is partially severedby one saw and the severing is completed by the other saw, a plate entering the saw cu t formed by one of said saws, said plate being formed to cooperate with the peripheries of said saws for forming a pocket in said saw cut adjacent said peripheries and the uncut portion of the stone, and means for feeding abrasive to said pocket.

5. A stone sawing machine comprising, in combination, a pair of circular saws the axes of which are substantially parallel, means for simultaneously rotating said saws, means for effecting feeding movement between said saws and the stone in such direction and at such angle to the plane including the axes of said saws that the stone is partially severed by one saw and the severing is completed by the other saw, a plate entering the saw cut formed by one of said saws, said plate being formed to cooperate with the peripheries of said saws for forming a pocket in said saw cut adjacent said peripheries and the uncut portion of the stone, and means including a conduit in said plate for feeding abrasive to said pocket.

6;. A stone sawing machine comprising, in combination, a pair of circular saws the axes of which are substantially parallel, means for simultaneously rotating said saws, means for effecting feeding movement between said saws and the stone in such direction and at such angle to the plane including the axes of said saws that the stone is partially severed by one sawand the severing is completed by the other saw, a plate supported at one side of the stone entering the saw cut formed by one of said saws, said plate formed to provide a chamber the walls of which include in the inner faceof said saw cut and the adjacent portion of the periphery of the other saw, and means for feeding abrasive to said chamber.

7. A stone sawing machine comprising, in combination, a pair of circular saws the axes of' which are substantially parallel, means for simultaneously rotating said saws, means for effecting feeding movement between said saws and the stone in such direction and at such angle to the plane including the axes of said saws that the stone is partially severed by one saw and the severing is completed by the other sa v, a plate'supported at one side of the stone entering the saw cut formed by one of said saws, said plate formed to provide a chamber the walls of which include the inner face of said saw cut and the adjacent portion of the periphery of the other saw, and means including a conduit formed in said plate for feeding abrasive to said chamber.

8. A stone sawing machine comprising, in combinatioma pair of circular saws the axes of which are substantially parallel, means for simultaneously rotating said saws,- means for effecting feeding movementbetween said saws and the stone in such direction and at such angle to the plane including the axes of said such abrasive by the saw forming said saw cut.

9. A stone sawing machine comprising, in combinatlon, upper and lower clrcular saws the axes of which lie in parallel vertical planes, means for adjusting the vertical distances between said axes while maintaining the bottom of the periphery of the upper saw below the top of the periphery of the lower r saw, means for feeding the stone toward said saws from the side thereof which is nearest the upper saw, mean for rotating said saws simultaneously in the same direction with the peripheries of said saws at the sides thereof toward which the stone is fed substantially moving downward, means for feeding abrasive to the peripheries of said saws comprising means for feeding abrasive to that portion of the saw cut made by the upper saw which is rearward of the lower portion of said saw and forward of the upper portion of the lower saw.

10. A stone sawing machine comprising, in combination, upper and lower circular saws the axes of which lie in parallel vertical planes, means for adjusting the vertical distances between said axes while maintaining the bottom of the periphery of the upper saw below the top of the periphery of the lower saw, means for feeding the stone toward said saws from the side thereof which is nearest the upper saw, means for rotating said saws simultaneouly in the same direction with the peripheries of said saws at the sides thereof toward which the stone is fed substantially moving downward; means entering the saw cut made by the upper saw and forming with said saws and the stone a pocket bounded in a vertical plane by said means, the peripheries of said saws, and the bottom of said saw cut; and means for feeding abrasive to said pocket.

11. A stone sawing machine comprising, in combination, upper and lower circular saws the axes of which lie in parallel vertical planes, means for adjusting the vertical distances between said axes while maintaining the bottom of the periphery of the upper saw below the top of the periphery of the lower saw, means for feeding the stone toward said saws from the side thereof which is nearest the upper saw, means for rotating said saws simultaneously in the same direction with the peripheries of said saws at the sides thereof toward which the stone is fed substantially moving downward, means entering the saw cut made by the upper saw and forming with 7 said saws and the stone a pocket at the bottom 12. A stone sawing machine comprising, in combination, upper and lower circular saws the axes of which lie in parallel vertical planes, means for adjusting the vertical distances between said axes while maintaining the bottom of the periphery of the upper saw below the top of the periphery of the lower saw, means for feeding the stone toward said saws from the side thereof which is nearest the upper saw, means for rotating said saws, means for feeding abrasive to the peripheries of said saws comprising means for feeding abrasive to that portion of the saw cut made by the upper saw which is rearward of the lower portion of said saw and forward of the upper portion of the iower saw.

'13. A stone sawing machine comprising, in combination, upper and lower circular saws the axes of which lie in parallel vertical planes, means for adjusting the vertical distances between said axes while maintaining the bottom of the periphery of the upper saw below the top of the periphery of the lower saw, means for feeding the stone toward said saws from the side thereof which is nearest the upper saw, means for rotating said saws, means for feeding abrasive to the peripheries of said saws comprising means for feeding abrasive to that portion of the saw out made by the upper saw which is rearward of the lower portion. of said saw and forward of the upper portion of the lower saw. j

14. A stone sawing machine comprising, in combination, upper and lower circular saws the axes of which lie in parallel vertical planes, means for adjusting the vertical distances between said axes while maintaining the bottom of the periphery of the upper saw below the top of the periphery of the lower saw, means for feeding the stone toward said saws from the side thereof which is nearest the upper saw, means for rotating said saws; means entering the saw cut made by the upper saw and forming with said saws and the stone a pocket bounded in a vertical plane by said means, the peripheries of said saws, andthe bottom of said saw cut; and means for feeding abrasive to said pocket.

15. A stone sawing machine having, in combination, a pair of saws of the type in which the saw teeth move continuously in the same direction, means for effecting feeding movementbetween said saws and the stone, said saws being so positioned relative to the stone and to the direct-ion of said feeding movement that one saw cuts partially through the stone and the other saw completes the cut, means for feeding abrasive to the saw cut for use by one of said saws, and means for pre venting removal of said abrasive from said out by the other saw. 7

16. A stone sawing machine having, in

combination, a pair of saws of the type in which the saw teeth move continuously in the same direction, means for effecting feeding movement between said saws and the stone, said saws being so positioned that the cutting portion of one is behind that of the other in the direction of said feeding movement, each saw acting from opposite sides of the stone to completely sever it, means for feeding abrasive to the saw cut made by one saw for use by the other saw, and means for preventing removal of said abrasive from said out by the saW making said saW out.

In testimony whereof, I have signed my name to this specification.

' P. S. LEGGE. 

